TY - BOOK ID - 138108666 TI - Gold in porphyry copper systems AU - Tooker, Edwin W. AU - James, Laurence P. AU - Theodore, Ted G. AU - Howe, Stephen S. AU - Blake, David W. PY - 1990 PB - Washington United States Geological Survey, Department of the Interior DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:138108666 AB - ER -